Bernini's Costanza bust and slashed face
Around 1636–38 Bernini carved an unusually intimate, informal marble bust of his lover Costanza Bonarelli, wife of one of his own assistants. On discovering she was also sleeping with his brother Luigi, he attacked Luigi and sent a servant to slash Costanza's face. The bust, now in Florence's Bargello, survives as a documented object in which private obsession and violence sit directly behind a work of art.